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    BATTERY PACK AND ELECTRIC VEHICLE
    43.
    发明申请
    BATTERY PACK AND ELECTRIC VEHICLE 有权

    公开(公告)号：US20250149701A1

    公开(公告)日：2025-05-08

    申请号：US19017026

    申请日：2025-01-10

    Applicant: BYD COMPANY LIMITED

    Inventor： Long HE ,  Huajun SUN ,  Yan ZHU ,  Liangwen TAN ,  Long WAN

    IPC: H01M50/209 ,  B60L50/64 ,  H01M10/613 ,  H01M10/625 ,  H01M10/6555 ,  H01M50/218 ,  H01M50/264 ,  H01M50/291

    Abstract: A battery pack includes a housing having a bottom surface and a top surface and a battery assembly in the housing. The battery assembly includes structural reinforcing members and cell sequences formed by connecting multiple cells. An outer surface of the cell includes a bottom surface, a top surface, first and second lateral surfaces. The bottom surface of the cell faces the bottom surface of the housing, and the top surface of the cell faces the top surface of the housing. The first lateral surface has a largest area. The multiple cells are arranged with second lateral surfaces thereof facing each other to form a cell sequence, and the structural reinforcing members are fixedly bonded with first lateral surfaces of cells in the cell sequence. The battery assembly is supported in the housing by the bottom surface of the housing.

    COMPOSITE POSITIVE ELECTRODE MATERIAL, POSITIVE ELECTRODE SHEET, MANUFACTURING METHOD THEREFOR, AND BATTERY
    47.
    发明公开
    COMPOSITE POSITIVE ELECTRODE MATERIAL, POSITIVE ELECTRODE SHEET, MANUFACTURING METHOD THEREFOR, AND BATTERY 审中-公开

    公开(公告)号：US20230299281A1

    公开(公告)日：2023-09-21

    申请号：US18021225

    申请日：2021-08-04

    Applicant: BYD COMPANY LIMITED

    Inventor： Na CHEN ,  Zewen RUAN ,  Yan ZHU ,  Rong HAO ,  Yi PAN

    IPC: H01M4/525 ,  H01M4/04 ,  H01M10/0525

    CPC classification number: H01M4/525 ,  H01M4/0404 ,  H01M4/0471 ,  H01M4/043 ,  H01M10/0525 ,  H01M2004/028

    Abstract: The present invention discloses a composite positive electrode material, a positive electrode plate and a preparation method thereof, and a battery. The composite positive electrode material comprises a ternary material (11) and a phase-transition material (12). The phase-transition material (12) undergoes phase transition in the charge/discharge voltage window of the ternary material (11). The ternary material (11) has a single crystal structure, the phase-transition material (12) has a single crystal structure or a poly-crystalline structure, and the phase-transition material (12) is coated on the surface of the ternary material (11). The weight ratio of the ternary material (11) to the phase-transition material (12) is 80:20-99.8:0.2. The ternary material (11) has a nanohardness of 0.001-5 GPa, and the phase-transition material (12) has a nanohardness of 0.01-10 GPa. According to the embodiment of the present invention, the cycle performance of the battery is improved, the impedance increase of the material during the aging process is reduced, and the safety of the battery is improved.

    BATTERY PACK HOUSING, BATTERY PACK, AND ELECTRIC VEHICLE
    48.
    发明申请
    BATTERY PACK HOUSING, BATTERY PACK, AND ELECTRIC VEHICLE 有权

    公开(公告)号：US20230082924A1

    公开(公告)日：2023-03-16

    申请号：US17989608

    申请日：2022-11-17

    Applicant: BYD COMPANY LIMITED

    Inventor： Xiaopeng WANG ,  Qingbo PENG ,  Zhipei LU ,  Jianhua ZHU ,  Yan ZHU

    IPC: H01M50/112 ,  H01M50/242 ,  H01M50/383 ,  H01M10/6551 ,  B60L50/64 ,  H01M50/249

    Abstract: A battery pack housing includes a housing body, the housing body includes multiple connected sub-housings, and at least one reinforcing plate is disposed in at least one of the sub-housings. Each of the sub-housings includes a top plate and a bottom plate arranged opposite to each other in a first direction, the first direction is a height direction of the housing, the at least one reinforcing plate is located between a top plate and a bottom plate, the at least one reinforcing plate is connected to the top plate and the bottom plate, and the at least one reinforcing plate divides an interior of the at least one of the sub-housings into multiple accommodating cavities. A mounting portion is provided on the housing and is configured to be connected and fixed to an external load.

    BATTERY, BATTERY MODULE, BATTERY PACK, AND AUTOMOBILE
    49.
    发明申请
    BATTERY, BATTERY MODULE, BATTERY PACK, AND AUTOMOBILE 有权

    公开(公告)号：US20230020386A1

    公开(公告)日：2023-01-19

    申请号：US17778767

    申请日：2020-11-19

    Applicant: BYD COMPANY LIMITED

    Inventor： Huajun SUN ,  Yan ZHU ,  Xinyue WANG

    IPC: H01M50/636 ,  H01M50/289 ,  H01M50/51

    Abstract: This application provides a battery. The battery includes a housing and a plurality of accommodating cavities located in the housing. Two adjacent accommodating cavities are isolated by a partition plate, and an electrode core assembly comprising at least one electrode core is arranged in the accommodating cavity. A plurality of electrode core assemblies are sequentially arranged along a first direction and connected in series. A liquid guiding hole and a gas guiding hole are provided on the partition plate. The liquid guiding hole and the gas guiding hole are used to connect two adjacent accommodating cavities at both sides of the partition plate. The battery further includes a blocking mechanism that enables the liquid guiding hole to be in a settable state including an open state and a closed state.

    BATTERY PACK AND ELECTRIC VEHICLE
    50.
    发明申请
    BATTERY PACK AND ELECTRIC VEHICLE 有权

    公开(公告)号：US20220416346A1

    公开(公告)日：2022-12-29

    申请号：US17777819

    申请日：2020-10-19

    Applicant: BYD COMPANY LIMITED

    Inventor： Long HE ,  Huajun SUN ,  Yan ZHU ,  Liangwen TAN ,  Long WAN

    IPC: H01M50/242 ,  H01M50/209 ,  H01M50/264

    Abstract: A battery pack and an electric vehicle are provided. The battery pack includes a casing and a battery assembly arranged inside the casing. The battery assembly includes a battery unit and a reinforcing member. The battery unit includes N cells. At least some of the cells in the battery unit are connected by M reinforcing members. An outer surface of each of the cells includes a bottom surface, a top surface, and lateral surfaces. The bottom surface of the cell faces a bottom surface of the casing. The lateral surfaces include a first lateral surface and two opposite second lateral surfaces. The first lateral surface has a largest area among the lateral surfaces. An area of the first lateral surface is greater than an area of the bottom surface and the area of the first lateral surface is greater than an area of the top surface. The N cells are arranged in sequence. The second lateral surfaces of two adjacent cells are arranged opposite to each other. The reinforcing member is fixedly bonded to the first lateral surface of each cell in Q adjacent cells. N>Q≥2.

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